Magic remote control for lamp

A magic remote control for a lamp, comprising a shell (A), a circuit board (B), a remote signal switch component (C) and a power supply unit, the shell (A) being formed with a first cavity (1), the circuit board (B) being located inside the first cavity (1) and fixed to the shell (A), the circuit board (B) being provided with a control circuit, the control circuit comprising a control unit (U4) and a signal transmission component, the power supply unit being connected to the control unit (U4), the remote signal switch component (C) being connected to the control unit (U4), and the signal transmission component being connected to the control unit (U4), wherein the control unit (U4) is configured to output a lamp operation mode change signal and an audio playback command after receiving a switch signal provided by the remote signal switch component (C);

• further comprising an audio unit (D) configured to play an audio according to the audio playback command from the control unit (U4), the audio unit being connected to the control unit (U4);
• the signal transmission component comprises a signal modulation circuit, a bandpass circuit and a transmitting antenna (U5), the signal modulation circuit being connected to the control unit (U4), the bandpass circuit being connected to the signal modulation circuit, and the bandpass circuit being connected to the transmitting antenna (U5);
• and
• the bandpass circuit comprises a fourth inductor (L4), a first capacitor (C1), a first inductor (L1), a third capacitor (C3), a second inductor (L2), a sixth capacitor (C6), a third inductor (L3) and a seventh capacitor (C7);
• wherein one end of the fourth inductor (L4) is connected to the power supply unit;
• wherein one end of the first capacitor (C1) is connected to another end of the fourth inductor (L4) and the signal modulation circuit respectively, while another end of the first capacitor (C1) is connected to one end of the first inductor (L1);
• wherein one end of the third capacitor (C3) and one end of the second inductor (L2) are both connected to another end of the first inductor (L1), while another end of the third capacitor (C3) is grounded;
• wherein one end of the sixth capacitor (C6) and one end of the third inductor (L3) are both connected to another end of the second inductor (L2), while another end of the sixth capacitor (C6) is grounded;
• and wherein one end of the seventh capacitor (C7) and the transmitting antenna (U5) are both connected to another end of the third inductor (L3), while another end of the seventh capacitor (C7) is grounded.